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Topic Review (Newest First)

02-19-2013 11:16 PM

69 widetrack

I agree...all I'm saying is that wind or air moving over a surface will cool an inanimate object faster than no wind, just like wind will cool a living entity faster than no wind...it physic's..We, in all probability agree.

You are right, the wind will not make any inanimate object colder than the ambient air temperature...I agree, however, as you mentioned it will make metal cool off faster, so metal being an inanimate object, is effected by air movement.

Perhaps semantic's and after reading your response I think we may be on the same page.

02-19-2013 04:11 PM

T-bucket23

Quote:

Originally Posted by 69 widetrack

I'm sorry T-bucket23 I think your wrong...windchill does affect things that aren't living. Whenever you have air moving over anything, it has a cooling effect. If that wasn't the case, why we use fans either electric or manual ones from the water pump to cool down an engine?

When a vehicle is sitting outside in -30 degree weather with a 25 mile an hour wind, it has less chance of starting than the same vehicle in the same conditions except it's in a garage sheltered from the 25 mile an hour winds.

Ray

No I am right, wind chill makes living things feel colder due to the rapid evaporation of moisture from the skin due to the wind.

Using your example if you put a chunk of steel outside at it is 0 degrees with a 50 mile per hour wind the temperature of the metal will be 0. It will get there faster because the moving air will help to dissipate and warmth that may be in the metal. As far a a radiator and fan, the air moving across the radiator removes excess heat. You can run that fan all day long and the temperature of the coolant in the radiator will never drop below ambient temperature.

Definition of wind chill

The human body loses heat through convection, evaporation, conduction, and radiation.[1] The rate of heat loss by a surface through convection depends on the wind speed above that surface. As a surface heats the air around it, an insulating boundary layer of warm air forms against the surface. Moving air disrupts the boundary layer, allowing for new, cooler air to replace the warm air against the surface. The faster the wind speed, the more readily the surface cools.

For inanimate objects, the effect of wind chill is to reduce any warmer objects to the ambient temperature more quickly. It cannot, however, reduce the temperature of these objects below the ambient temperature, no matter how great the wind velocity.

02-19-2013 03:29 PM

69 widetrack

Quote:

Originally Posted by T-bucket23

Just a note, wind chill does not affect engines. It only affects living beings.

I'm sorry T-bucket23 I think your wrong...windchill does affect things that aren't living. Whenever you have air moving over anything, it has a cooling effect. If that wasn't the case, why we use fans either electric or manual ones from the water pump to cool down an engine?

When a vehicle is sitting outside in -30 degree weather with a 25 mile an hour wind, it has less chance of starting than the same vehicle in the same conditions except it's in a garage sheltered from the 25 mile an hour winds.

Ray

02-18-2013 05:02 PM

T-bucket23

Just a note, wind chill does not affect engines. It only affects living beings.

02-18-2013 12:54 AM

vinniekq2

16º is a good place to start with a medium cam.

02-18-2013 12:43 AM

QParker

I got the motor in, and running, but I don't know what I should set my base timing at. 12*? 10?
Also, when I mash the throttle, it backfires out the carb, is that from improper timing, or...
Thanks for all the help guys!

01-25-2013 01:45 AM

spinn

My cam is mild, but the choke setting housing needed to swing to the winter setting. Has a plug in battery float charger and block heater from outdoor outlet. Sits outside in driveway no garage. A day ago it was 0/-20 wind chill in the morning. Went out , cranked and fired right up. Exit, let run high idle ,and unplug front of vehicle. Inside for work stuff and out. Get in and drive it away. Normal $2 a qt oil 10w40 gtx.

The blower regulates the low speed power generation. Almost port EFI like responsiveness. Applying throttle makes huge lumps of torque.

01-24-2013 01:57 AM

QParker

I suppose I'll just have to wait and see when I get it running.

01-09-2013 02:47 AM

QParker

I punched in my numbers on an online calculator, and with 9:1scr, and my cam timing, I got 8.45:1dcr. Is this too much for 87 octane? 89?
I noticed that summit only shows valve events at .050" lift, do I need timing at the seat for these calculators?
Here's the cam specs again:http://static.summitracing.com/globa...s/sum-1103.pdf

01-07-2013 11:55 PM

vinniekq2

got to be 300

01-07-2013 11:45 PM

QParker

So, I ended up using the Summit cam, and my 186 heads, with a .015 shim gasket, which brings me up to about 9:1 give or take a point. and .043 quench
Now, with that, 1 5/8 Headers, and stock, but gasket matched intake/heads, where should I be power wise?

I'm thinking I'll save the 186's for a properly built motor, and run this the way it is. The summit cam seems alot better suited to the stock goodwrench motor, am I right? Maybe use shim gaskets to help quench and compression while im at it..

And crane makes summits cams, so I'm not too afraid of quality..
Dad has a 1104 summit cam in a 383 in his airboat that performs well and we haven't had any problems in 3 years since it was built, so...

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